From patchwork Fri Feb 23 09:36:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhargav Raviprakash X-Patchwork-Id: 776040 Received: from esa2.ltts.com (unknown [14.140.155.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5190D5D8FE; Fri, 23 Feb 2024 09:38:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=14.140.155.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708681116; cv=none; b=rNUVifHwYnkYkpxun7yoR8g23OVzlf7JQm8NSouvdBWnCBOVr8JG//KbaSUzrKmEslau7373BazYnKa8JEYCXKb03p15/mQCoW0iu3NGxheEcbVoQ7R6b03YxNmw6Zmbu0FV4DbBtD/8GyZOFlB5ZfLY+r8aX05vDwUJN2uEAq8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708681116; c=relaxed/simple; bh=IxGn927BGFRmm/ygF3LwDNCQJWTN1CLV232sRxge5WA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=bLs6xdXE6EQwVbeg5yEuqkSnl/heOKvJMmcdp9te28uSe23+08ao7R9GFZ6yd0Yhkx7kBkBS7WYd+qPoO4E8+wacSmPZEXdsPlsRKUwgL+w1jCMs6FkIqKBW5oPjseXjvD2Mdk+RmfiIvG5K8T2tnJ7kpWg3a1Fgp91nCX94hwo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ltts.com; spf=pass smtp.mailfrom=ltts.com; arc=none smtp.client-ip=14.140.155.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ltts.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ltts.com IronPort-SDR: 4z+h5Ryn3S4fklvhBY9Bnn3sYLsXvBk0YGJoqfwuI9uuuR9xsYw5Gyk8Fc/isDDB3Qjimo5mfq ILzrh2XM1cPA== Received: from unknown (HELO localhost.localdomain) ([192.168.34.55]) by esa2.ltts.com with ESMTP; 23 Feb 2024 15:07:16 +0530 From: Bhargav Raviprakash To: linux-kernel@vger.kernel.org Cc: m.nirmaladevi@ltts.com, lee@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jpanis@baylibre.com, devicetree@vger.kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, lgirdwood@gmail.com, broonie@kernel.org, linus.walleij@linaro.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, nm@ti.com, vigneshr@ti.com, kristo@kernel.org, Bhargav Raviprakash Subject: [PATCH v2 08/14] misc: tps6594-pfsm: Add TI TPS65224 PMIC PFSM Date: Fri, 23 Feb 2024 15:06:55 +0530 Message-Id: <20240223093701.66034-9-bhargav.r@ltts.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240223093701.66034-1-bhargav.r@ltts.com> References: <20240223093701.66034-1-bhargav.r@ltts.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support for TPS65224 PFSM in the TPS6594 PFSM driver as they share significant functionality. Signed-off-by: Bhargav Raviprakash --- drivers/misc/tps6594-pfsm.c | 55 +++++++++++++++++++++++++++---------- 1 file changed, 40 insertions(+), 15 deletions(-) diff --git a/drivers/misc/tps6594-pfsm.c b/drivers/misc/tps6594-pfsm.c index 88dcac814..4fa071093 100644 --- a/drivers/misc/tps6594-pfsm.c +++ b/drivers/misc/tps6594-pfsm.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * PFSM (Pre-configurable Finite State Machine) driver for TI TPS6594/TPS6593/LP8764 PMICs + * PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs * * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/ */ @@ -34,15 +34,17 @@ #define TPS6594_FILE_TO_PFSM(f) container_of((f)->private_data, struct tps6594_pfsm, miscdev) -/** +/* * struct tps6594_pfsm - device private data structure * * @miscdev: misc device infos * @regmap: regmap for accessing the device registers + * @chip_id: chip identifier of the device */ struct tps6594_pfsm { struct miscdevice miscdev; struct regmap *regmap; + unsigned long chip_id; }; static ssize_t tps6594_pfsm_read(struct file *f, char __user *buf, @@ -133,21 +135,29 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a struct tps6594_pfsm *pfsm = TPS6594_FILE_TO_PFSM(f); struct pmic_state_opt state_opt; void __user *argp = (void __user *)arg; + unsigned int regmap_reg, mask; int ret = -ENOIOCTLCMD; switch (cmd) { case PMIC_GOTO_STANDBY: - /* Disable LP mode */ - ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_BIT_LP_STANDBY_SEL); - if (ret) - return ret; + /* Disable LP mode on TPS6594 Family PMIC */ + if (pfsm->chip_id != TPS65224) { + ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, + TPS6594_BIT_LP_STANDBY_SEL); + + if (ret) + return ret; + } /* Force trigger */ ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS, TPS6594_BIT_TRIGGER_I2C(0), TPS6594_BIT_TRIGGER_I2C(0)); break; case PMIC_GOTO_LP_STANDBY: + /* TPS65224 does not support LP STANDBY */ + if (pfsm->chip_id == TPS65224) + return ret; + /* Enable LP mode */ ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, TPS6594_BIT_LP_STANDBY_SEL); @@ -169,6 +179,10 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a TPS6594_BIT_NSLEEP1B | TPS6594_BIT_NSLEEP2B); break; case PMIC_SET_MCU_ONLY_STATE: + /* TPS65224 does not support MCU_ONLY_STATE */ + if (pfsm->chip_id == TPS65224) + return ret; + if (copy_from_user(&state_opt, argp, sizeof(state_opt))) return -EFAULT; @@ -192,14 +206,20 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a return -EFAULT; /* Configure wake-up destination */ + if (pfsm->chip_id == TPS65224) { + regmap_reg = TPS65224_REG_STARTUP_CTRL; + mask = TPS65224_MASK_STARTUP_DEST; + } else { + regmap_reg = TPS6594_REG_RTC_CTRL_2; + mask = TPS6594_MASK_STARTUP_DEST; + } + if (state_opt.mcu_only_startup_dest) - ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_MASK_STARTUP_DEST, - TPS6594_STARTUP_DEST_MCU_ONLY); + ret = regmap_write_bits(pfsm->regmap, regmap_reg, + mask, TPS6594_STARTUP_DEST_MCU_ONLY); else - ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2, - TPS6594_MASK_STARTUP_DEST, - TPS6594_STARTUP_DEST_ACTIVE); + ret = regmap_write_bits(pfsm->regmap, regmap_reg, + mask, TPS6594_STARTUP_DEST_ACTIVE); if (ret) return ret; @@ -210,8 +230,12 @@ static long tps6594_pfsm_ioctl(struct file *f, unsigned int cmd, unsigned long a return ret; /* Modify NSLEEP1-2 bits */ - ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS, - TPS6594_BIT_NSLEEP2B); + if (pfsm->chip_id == TPS65224) + ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS, + TPS6594_BIT_NSLEEP1B); + else + ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS, + TPS6594_BIT_NSLEEP2B); break; } @@ -262,6 +286,7 @@ static int tps6594_pfsm_probe(struct platform_device *pdev) tps->chip_id, tps->reg); pfsm->miscdev.fops = &tps6594_pfsm_fops; pfsm->miscdev.parent = dev->parent; + pfsm->chip_id = tps->chip_id; for (i = 0 ; i < pdev->num_resources ; i++) { irq = platform_get_irq_byname(pdev, pdev->resource[i].name);